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130 lines
2.6 KiB
130 lines
2.6 KiB
package mightypork.utils.files.zip;
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import java.io.BufferedOutputStream;
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import java.io.File;
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import java.io.FileOutputStream;
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import java.io.IOException;
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import java.io.InputStream;
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import java.util.HashSet;
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import java.util.zip.ZipEntry;
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import java.util.zip.ZipOutputStream;
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import mightypork.utils.files.FileUtils;
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import mightypork.utils.logging.Log;
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/**
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* Class for building a zip file
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*
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* @author Ondřej Hruška (MightyPork)
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*/
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public class ZipBuilder {
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private final ZipOutputStream out;
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private final HashSet<String> included = new HashSet<>();
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/**
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* @param target target zip file
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* @throws IOException if the file is directory or cannot be created
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*/
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public ZipBuilder(File target) throws IOException {
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if (!target.getParentFile().mkdirs()) throw new IOException("Could not create output directory.");
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final FileOutputStream dest = new FileOutputStream(target);
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out = new ZipOutputStream(new BufferedOutputStream(dest));
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}
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/**
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* Add stream to a path
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*
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* @param path path
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* @param in stream
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* @throws IOException
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*/
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public void addStream(String path, InputStream in) throws IOException
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{
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path = preparePath(path);
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if (included.contains(path)) {
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Log.f3("Zip already contains file " + path + ", skipping.");
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return; // ignore
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}
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included.add(path);
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out.putNextEntry(new ZipEntry(path));
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FileUtils.copyStream(in, out);
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}
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/**
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* Add string as a file
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*
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* @param path path
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* @param text text to write
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* @throws IOException
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*/
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public void addString(String path, String text) throws IOException
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{
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path = preparePath(path);
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if (included.contains(path)) return; // ignore
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included.add(path);
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out.putNextEntry(new ZipEntry(path));
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try (InputStream in = FileUtils.stringToStream(text)) {
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FileUtils.copyStream(in, out);
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}
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}
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/**
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* Add resource obtained via FileUtils.getResource()
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*
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* @param path path
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* @param resPath resource path
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* @throws IOException
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*/
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public void addResource(String path, String resPath) throws IOException
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{
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path = preparePath(path);
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if (included.contains(path)) return; // ignore
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included.add(path);
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out.putNextEntry(new ZipEntry(path));
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try (InputStream in = FileUtils.getResource(resPath)) {
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FileUtils.copyStream(in, out);
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}
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}
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/**
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* Normalize path
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*
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* @param path original path
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* @return normalized path
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*/
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private static String preparePath(String path)
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{
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path = path.replace("\\", "/");
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if (path.charAt(0) == '/') path = path.substring(1);
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return path;
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}
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/**
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* Close the zip stream
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*
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* @throws IOException
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*/
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public void close() throws IOException
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{
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out.close();
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}
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}
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